Rheem · Furnace

82 Supply air sensor fault (SA SENSOR FLT)

Low severity RGPE/RGLE

What the control is telling you

Supply air temperature sensor fault. Not stored back-to-back in the buffer.

Applies to: RGPE/RGLE 2-stage 80+

Likely causes

Sensor missing/unplugged/failed
Sensor input enabled with no sensor installed

Test and repair steps

Check the supply air sensor is installed and connected.
If no sensor is used, set the supply air sensor input OFF in the furnace setup user menu (factory default ON) - this stops code 82.
For dual-fuel operation the sensor MUST be installed and enabled.
Check sensor wiring to the IFC.

Settings for these units

Filter sizes as shipped, upflow (Table 19) · RGPE/RGLE
Reduced clearance to combustibles (Fig. 3 and 4) · RGPE/RGLE

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Source: RGPE/RGLE: Table 16 p.49 / Table 20; user menus p.55. Summarized in our own words; check the original manual for your model.

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For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.